1964 Sc 2932-2935 Rocket Construction Pioneers Scott 2885-2888

1964. Rocket Construction Pioneers.
Condition: MNHOG.
Catalog numbers: Scott 2885-2888, Standard Collection 2932-2935, Michel 2898A-2899A, 2900Aa, 2900Ab.
Issued on: April 12, 1964.
Perforation: comb 11½.
Printing: Photogravure.
Size: 28 x 40 mm.
Color: Multicolor.
Face value: 4*10 Russian kopek.
Quantity: 3,000,000; 3,000,000; 3,000,000; 1,000,000.